flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 450 double pounds per square inch shear strength anodize surface treated
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 26000 single pounds per square inch shear strength anodize or chromate surface treated
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 90000 single pounds per square inch shear strength passivate surface treated